Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )

Array ( [0] => Array ( [wr_id] => 810221 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 4 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 10 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:03:22 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => 2023-07-23 01:19:59.093521 [name] => 목현동 [is_lock] => [reply_name] => [content1] => 만일.. 100점 만점에 50점 이상이면 합격이다 라고 했을때.. 문항수가 총 30문항이면 몇 문제를 맞추면 합격일까요?? 누구나.. 50점 만점이니 절반만 맞추면 합격이네. 30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠. 숫자로 풀이해보면.. 100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다. 근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면.. 100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다. 결국 49.9999.. 은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠. 무한소수에 대해서 사람들이 헷갈려하는 이유는.... 소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다. 분수 1/3 은 소수로 표현하기에 적합하지 않습니다. 표현하자면.. 0.333333333333333333 [content] => 만일.. 100점 만점에 50점 이상이면 합격이다

라고 했을때..

문항수가 총 30문항이면  몇 문제를 맞추면 합격일까요??



누구나.. 50점 만점이니 절반만 맞추면 합격이네.

30문제 중 15문제 맞추면 합격이라고 생각할 수 있겠죠.


숫자로 풀이해보면..


100점 / 30 문제 * 15문제 = (100 * 15) / 30 = 100 / 2 = 50점 입니다.


근데 이것을 약분하지 않고 그냥 풀어버리면 어떻게 되냐면..

100 / 30 * 15 = 0.3333.. * 15 = 49.9999.. 이 되어버립니다.


결국 49.9999..  은 반올림해서 50이 아니라.. 처음부터 그냥 50 이라는 숫자인것이죠.



무한소수에 대해서 사람들이 헷갈려하는 이유는....

소수로 표현하기에 적합하지 않은 숫자를 억지로 소수로 표현했기 때문에 발생합니다.


분수 1/3 은 소수로 표현하기에 적합하지 않습니다.

표현하자면.. 0.333333333333333333 [is_secret] => [date] => 1689807802 [datetime] => 23-07-20 08:03 [best] => 1 [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [1] => Array ( [wr_id] => 810182 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 3 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => kakao_97fd08f2 [wr_password] => *CCD6B40F71C86429516649EC443EA06706F238FA [wr_name] => 오랑케 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:45:33 [wr_file] => 0 [wr_last] => [wr_ip] => 175.126.93.48 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 78 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 오랑케 [is_lock] => [reply_name] => [content1] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [content] => ㅋㅋㅋ 합격해주라 ㅎㅎㅎ [is_secret] => [date] => 1689806733 [datetime] => 23-07-20 07:45 [best] => [ip] => 175.♡.93.48 [is_reply] => [is_edit] => [is_del] => ) [2] => Array ( [wr_id] => 809531 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 2 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 잉?ㅋㅋㅋ아깝데이 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_a5550a09 [wr_password] => *0C00DF2EC9E9096B9634D0B166F8DD8580B49C8E [wr_name] => 나이땈 [wr_email] => efu99love@naver.com [wr_homepage] => [wr_datetime] => 2023-07-19 17:53:39 [wr_file] => 0 [wr_last] => [wr_ip] => 175.223.21.73 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 165 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 나이땈 [is_lock] => [reply_name] => [content1] => 잉?ㅋㅋㅋ아깝데이 [content] => 잉?ㅋㅋㅋ아깝데이 [is_secret] => [date] => 1689756819 [datetime] => 23-07-19 17:53 [best] => [ip] => 175.♡.21.73 [is_reply] => [is_edit] => [is_del] => ) [3] => Array ( [wr_id] => 809435 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-19 16:43:39 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => [as_re_name] => [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 1 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => [content1] => 60점부터 합격인데 당연히 불합격이지 장난하나 [content] => 60점부터 합격인데 당연히 불합격이지 장난하나 [is_secret] => [date] => 1689752619 [datetime] => 23-07-19 16:43 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [4] => Array ( [wr_id] => 825542 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => X [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 저 글을 읽고도 이런 소릴 하는구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_9d210934 [wr_password] => *29262D89862709EC45D14AD2778280EA3C467536 [wr_name] => 뭐하세요 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-01 20:32:47 [wr_file] => 0 [wr_last] => [wr_ip] => 14.50.43.7 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 37 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뭐하세요 [is_lock] => [reply_name] => 줄리 [content1] => 저 글을 읽고도 이런 소릴 하는구나 [content] => 저 글을 읽고도 이런 소릴 하는구나 [is_secret] => [date] => 1690889567 [datetime] => 23-08-01 20:32 [best] => [ip] => 14.♡.43.7 [is_reply] => [is_edit] => [is_del] => ) [5] => Array ( [wr_id] => 825848 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => XZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => ㅋㅋ 너구나 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-08-02 06:21:56 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_9d210934 [as_re_name] => 뭐하세요 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뭐하세요 [content1] => ㅋㅋ 너구나 [content] => ㅋㅋ 너구나 [is_secret] => [date] => 1690924916 [datetime] => 23-08-02 06:21 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) [6] => Array ( [wr_id] => 810142 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Y [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 4 [wr_nogood] => 0 [mb_id] => naver_97d908d5 [wr_password] => *1F18266A75A4A42473835D0FF42BD079106BF75E [wr_name] => 글쎄…… [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 07:16:10 [wr_file] => 0 [wr_last] => [wr_ip] => 97.134.67.144 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 79 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => 2023-07-28 11:16:18.249877 [name] => 글쎄…… [is_lock] => [reply_name] => 줄리 [content1] => 수학적으로 0.99999... = 1 입니다. 증명: (a) x=0.99999... (b) 10x=9.99999... 두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1 고로 0.99999... = 1 59.99999... = 59 + 0.99999... = 59 + 1 = 60 [content] => 수학적으로 0.99999... = 1 입니다.
증명:
(a) x=0.99999...
(b) 10x=9.99999...
두 식을 (b) - (a) 를 하면 9x=9, 양변을 9로 나누면 x=1
고로 0.99999... = 1

59.99999... = 59 + 0.99999... = 59 + 1 = 60 [is_secret] => [date] => 1689804970 [datetime] => 23-07-20 07:16 [best] => [ip] => 97.♡.67.144 [is_reply] => [is_edit] => [is_del] => ) [7] => Array ( [wr_id] => 810222 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => YZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 0 [wr_nogood] => 0 [mb_id] => naver_8f5a0851 [wr_password] => *DA614F7BF4F586672C7CF7000F75A0F637E2D0E5 [wr_name] => 목현동 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 08:04:11 [wr_file] => 0 [wr_last] => [wr_ip] => 106.101.195.215 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 67 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_97d908d5 [as_re_name] => 글쎄…… [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 목현동 [is_lock] => [reply_name] => 글쎄…… [content1] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [content] => 그런 증명을 이해할 수준이면 애초에 저런 댓글도 안달았겠죠 [is_secret] => [date] => 1689807851 [datetime] => 23-07-20 08:04 [best] => [ip] => 106.♡.195.215 [is_reply] => [is_edit] => [is_del] => ) [8] => Array ( [wr_id] => 809990 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => Z [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_958708ef [wr_password] => *1BBA119288573A03CC67FFBA8B27D93F3B4F5691 [wr_name] => 뱃보이 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 01:21:11 [wr_file] => 0 [wr_last] => [wr_ip] => 125.244.102.192 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 17 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_85f40814 [as_re_name] => 줄리 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 뱃보이 [is_lock] => [reply_name] => 줄리 [content1] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음.. 분수계산법으로 하는게 맞다고 봄.. 18/30 = 6/10 = 60점 [content] => 그럼 만점도 100점이 아니라 99.9999999999로 0.000000001점이 남음..
분수계산법으로 하는게 맞다고 봄..
18/30 = 6/10 = 60점 [is_secret] => [date] => 1689783671 [datetime] => 23-07-20 01:21 [best] => [ip] => 125.♡.102.192 [is_reply] => [is_edit] => [is_del] => ) [9] => Array ( [wr_id] => 810101 [wr_num] => -222434 [wr_reply] => [wr_parent] => 809408 [wr_is_comment] => 1 [wr_comment] => 1 [wr_comment_reply] => ZZ [ca_name] => [wr_option] => [wr_subject] => [wr_content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [wr_link1] => [wr_link2] => [wr_link1_hit] => 0 [wr_link2_hit] => 0 [wr_hit] => 0 [wr_good] => 1 [wr_nogood] => 0 [mb_id] => naver_85f40814 [wr_password] => *AB5858B73100A1A0231E02643F25DFD75B2BC6A6 [wr_name] => 줄리 [wr_email] => [wr_homepage] => [wr_datetime] => 2023-07-20 05:53:53 [wr_file] => 0 [wr_last] => [wr_ip] => 121.168.224.143 [wr_facebook_user] => [wr_twitter_user] => [articleid] => [wr_1] => [wr_2] => [wr_3] => [wr_4] => [wr_5] => [wr_6] => [wr_7] => [wr_8] => [wr_9] => [wr_10] => [as_type] => 0 [as_shingo] => 0 [as_img] => 0 [as_list] => 0 [as_publish] => 0 [as_extra] => 0 [as_extend] => 0 [as_level] => 71 [as_download] => 0 [as_down] => 0 [as_view] => 0 [as_lucky] => 0 [as_poll] => 0 [as_star_score] => 0 [as_choice] => 0 [as_choice_cnt] => 0 [as_re_mb] => naver_958708ef [as_re_name] => 뱃보이 [as_tag] => [as_map] => [as_icon] => [as_thumb] => [as_video] => [as_update] => [as_star_cnt] => 0 [ast_read] => 0 [ast_adlist_edate] => 0 [ast_adtop_edate] => 0 [ast_extend] => a:3:{s:14:"as_star_score1";i:0;s:14:"as_star_score2";i:0;s:14:"as_star_score3";i:0;} [ast_ultra_extend] => [wr_besttime] => [name] => 줄리 [is_lock] => [reply_name] => 뱃보이 [content1] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까 99.9999도 합격 [content] => 만점을 왜따져 합격이냐 불합격이냐가 중요한데 60점 밑으로는 불합격 60점부터는 합격이니까
99.9999도 합격 [is_secret] => [date] => 1689800033 [datetime] => 23-07-20 05:53 [best] => [ip] => 121.♡.224.143 [is_reply] => [is_edit] => [is_del] => ) )